If you are a candidate which group would you court to win the race? The 9 million vote mainstream group, right? Not so fast.
Candidate A courts the mainstream group successfully. On election day, A
wins that group by a margin of 53% to 47%. Many gubernatorial elections have smaller margins of differences than that. The difference is 6%. 6% of 9 million votes is 540,000 votes. So B is losing by 540,000 votes coming out of the mainstream group.
Candidate B courts the minority group, because the minority group knows how to deliver a bloc vote of 80% to 20%. B wins that group. The difference between 80% and 20% is 60%. 60% of one million votes is 600,000. So B
wins the governor's seat by a comfortable margin of (600,000 - 540,000) = 60,000 votes.
Do you now understand the POWER of a bloc vote? A small minority, with a 10% vote share, wins the gubernatorial race!